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1, 1, 1, 1, 1, 2, 5, 11, 21, 36, 60, 106, 205, 418, 851, 1685, 3257, 6264, 12210, 24276, 48920, 98873, 199118, 399472, 801361, 1613713, 3266772, 6640770, 13526547, 27564804, 56183565, 114612879, 234187293, 479442918, 983236998, 2018936664, 4149222198
(列表;图表;参考;听;历史;文本;内部格式)
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